| Author(s): |
Keith A. Gillis; |
| Title: |
Second-order boundary corrections to the radial acoustic eigenvalues for a spherical cavity |
| Published: |
August 17, 2012 |
| Abstract: |
We calculated the eigenvalues of the radially-symmetric acoustic modes of a gas-filled, spherical cavity to order (δT/a)2, where δT is the thickness of the thermal boundary layer and a is the radius of the cavity. Our results are consistent with high-precision acoustic measurements made to re-determine the Boltzmann constant. |
| Citation: |
Metrologia |
| Volume: |
49 |
| Issue: |
6 |
| Pages: |
pp. L21 - L24 |
| Keywords: |
Boltzmann constant; spherical resonator; speed of sound; second order; radial modes; eigenvalues |
| Research Areas: |
Metrology, International System (SI) of Units, Gas Metrology |
| PDF version: |
 Click here to retrieve PDF version of paper (292KB) |
